ABRASION COASTAL CLIFFS OF WESTERN KAMCHATKA

In northwestern Kamchatka, five types of abrasion coasts are distinguished between the Utkholok and Etolona Rivers. The predominantly abrasion subtype predominates in the areas of development of magmatic formations on the western coast of the Utkholok Peninsula, as well as on the Ovra and Omgon Capes. It is represented by steep slopes, wave-cut niches and abrasion terraces (benches). The abrasion-landslide subtype of coast is characterized by large landslides, the frontal parts of which reach the level of wave impact. An example is the landslide south of Cape Ovra. The abrasion-collapse subtype of coast was formed where rock strata dip steeply (at an angle exceeding 40–50°). This type of coast is typical for the areas of Cape Babushkin and the mouth of the Tochilo Creek. The abrasion-landslide-avalanche subtype of coast was formed in the area of differently deformed Cenozoic sedimentary rocks outcropping in the Tochilo section. The abrasion-denudation subtype of coast is developed in areas with gently sloping or horizontal rock strata in the north of the Tochilo, Maynach and Uvuch sections. Inactive portions of coastline are the abrasion- denudation high cliffs strongly vegetated.